Rod or pipe clamp.



J. A. HARDMAN. ROD 0R PIPE CLAMP. APPLICATION FILED JUNE 2, 1913.

1, 100,299. Patented June 16, 1914.

p I Jesse Ajjardman,

UNITED sra'r PATENT OFFICE.

JESSE A. HARDMAIT, 0F BICHBURG, NEW YORK.

BOD 0R RIPE CLAMP.

To all whom it may concern Be it known that I, Jnssn A. HARDMAN, a citizen of the United States, residing at Richburg, in the county of- Allegany and State of New York, have invented certain new and useful Improvements in Rod or Pipe Clamps, of which the following is a specification.

My invention relates to clamping means for smooth or rough rods, pipes or the like, and has particular reference to means of this character adapted to be detachably connected or locked with a pump rod, pipe or other longitudinally movable element to prevent the longitudinal movement of the same, such as a vertical downward movement.

An important object of this invention is to provide means of the above mentioned character, which may be quickly and easily placed upon and removed from a rod, pipe or like element, and which may be securely locked thereto so that it will be impossible for the same to slip therein.

A further object of my invention is to provide means of the above mentioned char acter, which are simple in construction, cheap to manufacture, convenient in use, strong, and durable.

Other objects and advantages of this invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same, Figure 1 is a side view of the complete apparatus, showing the same in use, Fig. 2 is a plan view of the same, Fig. 3 is a transverse sectional view taken on line 33 of Fig. 2, Fig.- 4: is a perspective view of the clamping jaws, showing the same in engagement with the well rod, and, Fig. 5 is an end view of the clamping jaws.

In the drawings, wherein for the purpose of illustration, is shown a preferred embodiment of my invention, the numeral 6 designates a well rod, to which the apparatus is applied. It is to be understood that the apparatus is not restricted to the use in connection with the well rod, as the same may be used in connection with a well pipe or casing, or the same may be employed to hold a great many different vertically movable elements against movement, particularly downward movement.

The apparatus comprises oppositely, ar-

Specification of Letters Patent.

Application filed June 2, 1913.

Patented June 16, 1914.

Serial No. 771,370.

ranged clamping jaws or blocks 7 and 8,

having corresponding ends forked, as shown at 9. Disposed within these forked ends 9 is a connecting bolt 10, preferably formed square in cross-section, as shown. The forked end 9 of the clamping jaw 8 is provided with a transverse pin or bolt 11, serving to pivotally connect one end of the connecting bolt 10 with the jaw 8, as shown. The opposite jaw '7 is provided adjacent its forked end 9 with a transverse pin 12, which does not pass through the connecting bolt 10 but is disposed outwardly thereof to prevent such bolt from being moved out of the forked end. The connecting bolt 10 has one end thereof formed cylindrical and screwthreaded for receiving an adjusting nut 13, as shown. The clamping jaws 7 and 8 are provided upon their inner adjacent faces with oppositely arranged recesses 14, for receiving the rod 6 or the like. The clamping jaw 8 is provided at one end with a cylindrical trunnion or reduced extension 15, preferably formed integral therewith. The corresponding end of the clamping jaw 7 is provided with a curved flange or extension 16, as shown.

The numeral 17 designates an operating lever, provided at its outer end with a hand grip 18 and at its inner end with an enlarged head 19. Formed upon the inner face of the enlarged head 19 and preferably formed or cast integral therewith, is a cam disk 20 having an opening 21 formed therethrough, as shown. This opening is arranged eccentrically with relation to the cam and passes through the enlarged head 19.

The numeral 22 designates a rigid open frame or loop, provided with curved end portions 23 and 2a. The cam 20 extends into one end of the open frame 22 and engages the curved end portion 23. Rigidly connected with the head 19 is a laterally extending finger 25, the outer end of which is bent down over the open frame 22, to permanently retain the same upon the head 19. The curved flange 16 extends into one end of the open frame 22, to engage the curved portion 24-. thereof, and the trunnion 15 extends through the opening 21. At its outer end, the trunnion 15 is provided with a transverse opening 26, for receiving a removable cotter pin 27 or the like.

The operation of the apparatus 1s as follows: The adjusting nut 13 is properly manipulated to bring the forked ends of the clamping jaws 7 and 8 to a proper position, depending upon the diameter of the rod 6 or" the like. The opposite ends of these clamping jaws 7 and 8 are then swung apart, so that they may be disposed upon opposite sides of the rod 6, and the rod 6 engage within the recesses 14. These ends of the clamping jaws 7 and 8 are then moved inwardly and the open frame or loop 22 about the curved flange 16 and the trunnion 15, such trunnion passing through the opening 21. lever 17 occupies a substantially vertical position, whereby the large portion of the cam will extend upwardly or vertically. The cotter pin 27 is now passed through the opening 26. The operating lever 17 is then forced downwardly, whereby the enlarged portion of the cam 20, which extends longitudinally of the same, will move the open frame or loop 22 longitudinally to draw the clamping jaws 7 and 8 together. These clamping jaws are thus rigidly locked to the rod 6. By swinging the lever 17 in a re verse direction, the clamping engagement between the open frame 22 and the flange 16 and cam 20 is destroyed, whereby, upon the removal of the cotter pin 27, the operating lever together with the elements carried thereby may be removed from the clamping jaws, which may be in turn removed from the rod 6. The clamping jaws are so hinged that they may be removed from the rod or the like by suitably manipulating the operating lever to loosen the jaws and sliding such lever outward into or near engagement with the cotter pin 27 where upon the jaw 7 may be swung away from jaw 8 a suflicient distance to permit the removal of the tool from the rod or the like without separating the operating lever from the jaws; and such operation of the tool is ordinarily preferred.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

placed When this is done, the operating.

Having described my invention, I claim 1. In apparatus of the character described, the combination with longitudinal oppositely arranged clamping jaws, of means pivotally connecting corresponding ends thereof, a reduced extension connected with the free end of one clamping jaw and extending axially thereof a flange formed upon the free end of the other clamping aw, a relatively rigid loop disposed adjacent the free ends of the clamping jaws and extending transversely thereof to receive in one end the flange and in its opposite end the reduced extension and provided adjacent the reduced extension with a cam disk engaging wall, and an operating lever arranged adj acent the free ends of the clamping jaws, extending transversely thereof, and provided with an apertured cani disk to receive the reduced extension and fit within one end of the relatively rigid loop to slidably engage the cam disk engaging wall thereof.

2. In apparatus of the character described, the combination with a pair of oppositely arranged clamping jaws, of means pivotally connecting corresponding ends thereof, a trunnion connected with the free end of one clamping jaw, an extension connected with the corresponding end of the other clamping jaw, an open frame surrounding the trannion and extension, an operating lever arranged adjacent the free ends of the jaws and extending transversely thereof, a cam disk formed upon one face of the operating lever and provided with an opening which extends through the operating lever, for receiving the trunnion, whereby the cam disk may be moved into the open frame, and the operating lever pivoted upon the trunnion and swung at approximately a right angle with relation to the clamping jaws and an element carried by the lever and slidably engaging the open frame to permanently hold the frame upon the operating lever.

In testimony whereof I afiix my signature in presence of two witnesses.

JESSE A. HARDMAN.

Witnesses JAMES L. CRAWFORD, G. W. PARKER.

Gopies'of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

